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![[Post New]](/templates/default/images/icon_minipost_new.gif) 6 Sep 2007 22:55:55 IST
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A ray of light travelling in water is incident on its surface open to air. The angle of incidence is  , which is less than the critical angle. Then there will be a reflected ray and a refracted ray and the angle between them would be less than 180-2. My doubt is that when the angle is less than the critical angle then why there is a reflected ray? There should be only a refracted ray. This question came in IITJEE-2007. Rates assured.
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6 Sep 2007 23:10:26 IST
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Once again i am replying for your question!!!!!
there is nothing like 100% reflection(except in Total internal reflection) or 100%refraction my dear friend!!!!
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6 Sep 2007 23:15:22 IST
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R U sure about ur answer. It doesn't look quite convinving. I mean you are talking about practical situation. We don't know if the question was meant for an ideal condition.
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The quality of a person's life is in direct proportion to their commitment to excellence, regardless of their chosen field of endeavor.
It is during our darkest moments that we must focus to see the light.
Check out my blog at:
http://tarinbansal.blogspot.com/
Posts:
Can marks really judge a student??
Some myths about Chemical Engineering.
(A must see for every student)
Back to goiit, this time with Baby Veerappan. :D |
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6 Sep 2007 23:22:54 IST
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Plz note these words " ...which is less than the critical angle..
is it ok now?
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it is not important where u stand, but in which direction u are moving |
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7 Sep 2007 00:15:19 IST
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Tarin Shetty is perfectly correct. If angle is more than critical there is only reflection. If angle of incidence is less than critical angle then there is both reflection as well as refraction. Haven't you seen your image in a transparent glass.
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Krishna Gopal Singh
B.Tech Chemical Engg
IIT Delhi 2002
Currently doing PhD from IIT Delhi |
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